Some state have been shown to be very resistant to national momentum. PA is not one of those states and I knew that before seeing this poll.

Some states are simply demographically bad for Romney. PA is not one of those states.

Some states are retail states that are won and lost by who runs around and meets the most people and some states are media market states that retail politics is less important in and what is more important is the ability to better saturate the airwaves with ads. PA is a media market state.

If Romney wants to win Pennsylvania I could see him doing so in a landslide because of the above factors.

Paul is just there to raise awareness of his pet political issues. Newt knows he is at the end of his political career so he doesn't have much to lose by staying in, Santorum believes he has a long time left to go in politics which is why Santorum has the most to lose by staying in. The RNC has lost its patience with the race and will not take kindly to Santorum trying to fight to the convention.

Even IF Santorum wins Pennsylvania, after you factor in the 3 WTA states, Romney only needs 37% of the remaining delegates (assuming the unpledged delegates vote the way they're "supposed" to... not 100% accurate, but close enough). The point is, with Romney leading in CA, NY, and not far behind in TX and PA, it'll take a miracle for him not to be the nominee mathematically before convention.